Beam current density distribution of a vacuum arc ion source

被引：4

作者：

Nikolaev, AG ^{[1
]}

Oks, EM

Zhang, XJ

Cheng, C

机构：

[1] Russian Acad Sci, Inst High Current Elect, Tomsk 634055, Russia

[2] State Univ Control Syst & Radioelect, Tomsk 634050, Russia

[3] Beijing Normal Univ, Inst Low Energy Nucl Phys, Beijing 100875, Peoples R China

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 1998年 / 69卷 / 02期

关键词：

D O I：

10.1063/1.1148573

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The distribution of the beam current density for metal ion vacuum are ion sources (MEVVA-type) lacks sufficient uniformity and its original form is similar to the Gaussian one. This is because of the plasma generation in a small space near the cathode spot. Further expansion of the plasma to the emission region does not improve this situation which poses a serious problem in creating a broad beam ion source. This article presents experimental results on the influence of various factors on the beam current density distribution. Experiments were carried out in Beijing with the MEVVA-IIA ion source. An additional magnetic field was applied to the are gap and a small metal grid covering the emission electrode was used. (C) 1998 American Institute of Physics.

引用

页码：807 / 809

页数：3

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